Improvement in pumps



STATES ETE.

PATENT OFFICE.

NI'ELS JOHNSON, OF RIPON, WISCONSIN.

IMPROVEMENT IN PUMPS.

To all whom it may concern:

Be it known that I, NIELs JOHNSON, of Ripou, in the county of Fond du Lac and State of Wisconsin, have invented a new and useful Improvement in Pumps; and I do hereby declare that the following is a full, clear, and ex! act description thereof, which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which` Figure 1 is an elevation of an axial section of a pump made according to my invention, taken on the line z ot' Fig. 3. Fig. 2 is an axial section of a portion of the pump, taken on the line a: of Fig. 1. Fig. 3 is a plan of a crosssection taken on the line y of Fig. 2.

Similar letters of reference indicate like parts.

This improvement relates to the class of pumps whose cylinders are submerged. My pump is double-acting, and the piston-rod and piston are hollow. Amongother novel features is a device for securing the cylinder in its proper position in a well or reservoir, and which is operatedfrom the top ot' the well.

The letters A designate standards, in which the pump-lever A2 works. A designates the bottom of thereservoir. TheleverA`2isjointed to the upper end of the piston-rod, consisting inlthisexampleot an extension-rod, B', screwed into the top of the hollow piston-rod B,just abovethespoutO. ThecylinderDis supported by legs y, four or more in number, which rise from a cup-shaped fobt, V, which is to rest upon the bottom A of the Well or reservoir. The bottom of the cylinder has an inlet-opening in its center, which is governed by a valve, K, whose seat of course is on the inside of the cylinders bottom. The lower part of the valvestem of the valve K has three arms, 1, two of which are seen in Fig. 1, which extend in radial directions far enough beyond the edges of the valveopenin g to prevent the displacement ot' the valve; but they are narrow, so as not to hinder the flow ot' water.

The letters L designate convex springs, four in number, which extend upward from the outside ofthe cup to the bottom of the cylinder D, so as to inclose and protect the legs y. Only two of these springs are seen in the drawings. Their office istohold thelowerpartot' the pump in place by coming in contact with the sides of the well in which the pump is placed.

The letters H designate two springs, which extend from the bottom to the top ot' the cylinder. They are held to the cylinder by screwpins i t', passing through slots in the springs, which allow the springs to have motion on the pins lengthwise on its outside. Their upper ends carry pins b b, which project inward through flanges raised on the top of the cylinder D, and press against the outer sides of curved spring-plates c c, which extend eccentrically around the highest part ot' said cylinder. These spring-plates c c are iixed to the lower part ot' the collar G, whose upper part has two sectional eccentrics, U U, the ends of which are in radial lines, as seen in Fig. 2, and also in dotted outline in Fig. 3, where their ends are covered by the bar m. The springs c c have depressions in them which engage the ends of the pins I1 b, and thereby lock the outer springs H and keep them disteuded. The collar G is rotated by means of vertical arms a, projecting from a bar, m, which extends on either side of the piston-rod, being xed by a screw-joint or in any other convenient way lo the piston-rod. The place of the collar E is directly above the stutting-box F, which ts by a screw-joint over the upper end of the cylinder, and has the usual packing, a, within it to prevent leakage around the piston-rod.

The letters t t designate valves placed in the upper part of the cylinder. Their stems s s reach upward and pass through plates P P, which extend horizontally from the neck O of the cylinder. The upper part ot' the valve` stems have springs q-q about the1n confined from above by caps formed on the upper ends of the valve-stems, the bottoms ot' the springs resting on the plates P P. This arrangement causes the valves tt to be constantly driven upward against their seats when the pump is at rest. The neck O is of a length in one direction equal'to the diameter ot' the cylinder; but its breadth is only sucient to receive the piston-rod within it. The collar G rests on the top ofthe neck O. A

When it is necessar y to secure the pump-cylinder within a well the cross-piece or plate mis rotated,'when its vertical arms n n will strike against the straight sides ot the eccentrics U U and rotate the collar G, and thereby crowd the springs c c against the pins Z b and push the outer springs against the sides of the well. The pins I) b will engage the depressions ofthe springs and so become locked. When the cylinder is to be withdrawn Jfrom the well the collar is rotated further round until the curved eccentric springs c c pass the pins b, and so let the springs H return toward the sides of the cylinder, in which position they offer no resistance to the withdrawal of the cylinder.

The hollow piston-rod B is screwed into the upper side of a hollow piston, I, which is properly packed by a packing, d. A bracket, e, extends from one side of the interior of the piston, for the purpose of guiding and holding a' valve-stem, J, whose valvesff close in alternation the openings g h ofthe piston.

The operation of the pump is as follows: lWhen the piston is forced downward any water in the cylinder below it will be forced up into the piston through its bottoni, the upper valve,j', closing the opening h and causing the water to flow np into the hollow piston-rod. In the meanwhile the descentl of the piston will cause a partial vacuum in the upper part `of the cylinder and cause the valves t t to be drawn downward against the spx-in gs q, when water will be received into the cylinder from above. When the piston ascends the valves t t will be shut, and the upper va1ve,f, will fall down and allow the water to rush into the piston and up the rod. The continuation of these operations will cause a stream of water to iow through the rod continuously.

The pump-handle has gudgeons or ears on each side,which arc received in horizontal slots a, made in that part of the standard which sustains the handle. The handle passes through an opening madein the upper part of the standard, and said slots occur on each side or wall of such opening. Friction-rolls are placed on the gudgeons or. journals of the handle, and these enable the said journals to be moved to ditt'erent parts of said slots with ease. By this arrangement the fulcrum ot the handle is shifted during different periods of the stroke of the piston without the necessity of providing a swinging joint orstirrnp to sustain the journais.

I claim as new and desire to secure by Letters Patentl. The lower springs, L, surrounding the bottom or foot of the pump and operating to hold that part steady in the woll, substantially as described.

2. The springs H H on the outside of the cylinder, made with pins b b, in combination with the rotating spring-plates o c, by which the springs H are forced against the sides of the well, substantially as described.

3. The cross-piece m and its arms n, in combination with the eccentric U ot' the collar G, substantially as described.

4.. The valves t t in the upper part ot' the cylinder, constructed as shown, with springs placed about their spindles, so arranged as to admit air to the cylinder at the downward stroke of the piston, substantially as described.

y NIELS JOHNSON.

Witnesses:

A. C. N YE, E. B. PRIDE. 

